<?php
//crc32(string $string): int
//crc32 — 计算一个字符串的 crc32 多项式

$checksum = crc32("The quick brown fox jumped over the lazy dog.");
$checksum = crc32(1);
echo $checksum;
printf("%u\n", $checksum);
$a = crc32("c294f5b1");
$b = crc32("fc26498f");
printf("%u\n", $a);
printf("%u\n", $b);
